No resistance on smart trainer

Hi hopefully someone can help, I have a tacx bushido which I used on a laptop for some time but unfortunately the screen kept freezing part way through workouts, I purchased apple TV last weekend hoping to solve this problem which it has but now I have no resistance on my trainer, has anyone got a solution to this? Any help would be much appreciated. Thanks. Paul

Have you down loaded the tacx calibration app onto an iphone
takes 2 mins to set up and use,

I have it on an ipad and have used it for calibration, not for a while though.